﻿NEUROPTERA. 
  341 
  

  

  coxa 
  is 
  large, 
  much 
  broader 
  than 
  loug, 
  subrhomboidal. 
  The 
  mesostig- 
  

   mata 
  or 
  their 
  peritremes 
  are 
  situated 
  each 
  on 
  the 
  front 
  and 
  upper 
  angle 
  

   of 
  the 
  suprasternite 
  directly 
  in 
  front 
  of 
  the 
  fore 
  wings. 
  

  

  Folystcechotes. 
  (PI. 
  LYI, 
  figs. 
  8-15). 
  The 
  pleurites 
  are 
  not 
  so 
  broad 
  

   and 
  short 
  as 
  in 
  Myrmeleon. 
  The 
  supra-sternite 
  is 
  considerably 
  longer 
  

   than 
  broad, 
  the 
  apex 
  toward 
  the 
  wings 
  being 
  conical. 
  The 
  episternum 
  

   is 
  vertically 
  oblong, 
  quite 
  regular, 
  being 
  considerably 
  longer 
  than 
  broad. 
  

   The 
  epimerum 
  is 
  moderately 
  broad, 
  square 
  below. 
  The 
  coxa 
  is 
  moder- 
  

   ately 
  long, 
  longer 
  than 
  broad 
  ; 
  the 
  trochantine 
  regularly 
  conical. 
  

  

  Mantispa. 
  (PI. 
  LY, 
  fig. 
  8.) 
  The 
  flanks 
  of 
  the 
  meso- 
  and 
  metathorax 
  

   are 
  of 
  the 
  same 
  size 
  and 
  general 
  appearance. 
  The 
  episternum 
  and 
  epi- 
  

   merum 
  are 
  each 
  subdivided 
  more 
  or 
  less 
  regularly 
  into 
  two 
  sclerites. 
  

   The 
  epimerum 
  as 
  a 
  whole 
  is 
  not 
  so 
  wide 
  as 
  the 
  episternum. 
  The 
  coxa 
  

   is 
  large, 
  full, 
  conical 
  j 
  the 
  trochantine 
  is 
  minute, 
  short, 
  triangular. 
  

  

  Metap 
  leurum 
  {Asca 
  laphus 
  ? 
  ) 
  . 
  

  

  Myrmeleon. 
  (PI. 
  LIY, 
  fig. 
  9.) 
  Although 
  the 
  meta- 
  are 
  not 
  much 
  

   shorter 
  than 
  the 
  mesopleurites, 
  the 
  episternum 
  (which 
  is 
  subdivided 
  into 
  

   an 
  upper 
  and 
  lower 
  sclerite) 
  is 
  smaller 
  but 
  nearly 
  of 
  the 
  same 
  shape 
  as 
  

   in 
  the 
  mesopleurites, 
  but 
  the 
  coxae 
  are 
  larger 
  and 
  broader 
  in 
  proportion. 
  

   The 
  supra-gjpimerite 
  is 
  very 
  different, 
  being 
  as 
  broad 
  as 
  long, 
  not 
  

   widening 
  above, 
  and 
  it 
  is 
  solid, 
  with 
  no 
  membranous 
  area 
  ; 
  while 
  the 
  

   infra-epimerite 
  is 
  a 
  linear, 
  antero-posterior 
  ridge 
  becoming 
  triangular 
  

   behind. 
  The 
  coxa 
  is 
  considerably 
  larger 
  than 
  in 
  the 
  mesothorax. 
  The 
  

   trochantine 
  is 
  one-half 
  smaller 
  than 
  that 
  of 
  the 
  mesothorax. 
  

  

  Folystcechotes. 
  (PI. 
  LYI, 
  fig. 
  15.) 
  The 
  meta- 
  are 
  about 
  one-third 
  shorter 
  

   than 
  the 
  mesopleurites. 
  The 
  episternum 
  is 
  as 
  in 
  the 
  mesothorax, 
  but 
  the 
  

   supra-sternite 
  is 
  fuller, 
  more 
  rounded 
  next 
  to 
  the 
  wings. 
  The 
  epimerum 
  

   is 
  divided 
  into 
  a 
  supra- 
  and 
  infra-epimerite. 
  The 
  coxse 
  are 
  more 
  rounded 
  

   and 
  globose 
  than 
  in 
  the 
  mesothorax, 
  while 
  the 
  trochantine 
  is 
  smaller 
  and 
  

   not 
  so 
  wide 
  in 
  proportion. 
  

  

  There 
  is 
  a 
  great 
  difference 
  between 
  the 
  thorax 
  of 
  Polystcechotes 
  and 
  

   Myrmeleon, 
  that 
  of 
  the 
  latter 
  being 
  about 
  twice 
  as 
  long 
  as 
  in 
  the 
  former 
  j 
  

   in 
  both, 
  however, 
  the 
  metathorax 
  is 
  shorter 
  than 
  the 
  mesothorax. 
  

  

  Mantispa. 
  The 
  metapleurites 
  are 
  a 
  little 
  stouter 
  and 
  thicker 
  than 
  the 
  

   mesopleurites, 
  but 
  have 
  the 
  same 
  structure, 
  though 
  the 
  coxae 
  are 
  consid- 
  

   erably 
  shorter. 
  

  

  Sternum, 
  

  

  Ascalaplius 
  f 
  

  

  Myrmeleon. 
  (PI. 
  LIY, 
  fig. 
  4.) 
  The 
  prosternum 
  is 
  rudimentary 
  and 
  

   membranous. 
  

  

  The 
  mesosternum 
  (PI. 
  LIY, 
  fig. 
  5) 
  is 
  large 
  and 
  well 
  developed, 
  sub- 
  

   cordate, 
  deeply 
  furrowed 
  medially; 
  about 
  two-thirds 
  as 
  long 
  as 
  broad. 
  

   There 
  is 
  no 
  suture 
  between 
  it 
  and 
  the 
  infra-episternite. 
  

  

  The 
  metasternum 
  (PI. 
  LIY, 
  fig. 
  6) 
  is 
  much 
  smaller 
  than 
  the 
  mesoster- 
  

   num, 
  but 
  from 
  lack 
  of 
  alcoholic 
  specimens 
  I 
  can 
  not 
  here 
  describe 
  it. 
  

  

  Polystcechotes. 
  The 
  prosternum 
  is 
  rudimentary 
  and 
  membranous. 
  

  

  